20894391

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5437}}^1$

素因数の和:5511

約数の個数: 24

約数和(自身を含む): 35064224

約数和(自身を除く): 14169833

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5437, 16311, 38059, 48933, 114177, 331657, 342531, 994971, 2321599, 2984913, 6964797, 20894391]

約数ペア:

[(1, 20894391), (3, 6964797), (7, 2984913), (9, 2321599), (21, 994971), (61, 342531), (63, 331657), (183, 114177), (427, 48933), (549, 38059), (1281, 16311), (3843, 5437)]